Whistle.



I. I. CURTIS.

WHISTLE.

APPLICATION FILED FEB. 25, IQIB.

Patenfd'Nov. 5,1918.

lllllmlllllmmll lll . construction,

' sounds A l UivTTnn sTATEs PATENT orrucn i JAMES J. CURTIS,AOF CHICAGO,ILL'INOIS.

WHISTLE.

Specification of Letters Patent; i. Patented NOV. 5, 1918 Application mdFebruary 25,1918.. seriarNo. 218,980.

To all 107mm t may concern: j Bc it known that LJAMES J. CUnTrs, acitizen of the United States, residing at Chicago, in theV county of'Cookand State of Illinois, have invented certain 'new and usefulImprovements in Vhistles, of which the following is a speciiication.This invention relates to improvements in whistles of; aA type whichVare particularly designed for use by traiiic controlling policemen ingiving signals, but rwhich may be used byfothers and for other purposes,and it consists incertain peculiarities of the construction, ynovelarrangement andoperation of the various parts thereof as willbehereinafter more fully set Vforth and speciiically claimed. Y I i Theprincipal object 'of the invention, is, tov provide a manuallyoperatedwhistle which shall be 'simple and 'inexpensive in compact in form,strong, durable, 'efficient in operation'and suiiiciently powerful toproduce very loud and shrill sounds or blasts; Another 'object lof theinvention is to furnish a whistle of the above mentionedgeneralcharacter which can be operated by the use of one hand only, andin such a manner that the shrill ljilasts or produced therebyl can bemade in succession or repeatedly, and the length thereof regulatedasdesired. Other objects and advantages ofthe invention will be disclosedin the subjoined description and explanation.

In the accompanying drawing which serves to illustrate an embodiment ofthe invention- Figure 1 is a vertical sectional view through the body orcylinder of the whistle showing the lower extremity thereof, the rotaryfan and operating handle in elevation and illustrating the parts intheir normal positions.

Fig. 2 is a vertical sectional view taken on line 2, 2 of Fig. 1 lookingin the direction indicated by the arrows, and

Fig. 3 is a cross sectional view taken on line 3, 3 of Fig. 1 looking inthe direction indicated by the arrows.

Like numerals of reference refer. to corresponding parts throughout thedifferent views of the drawing.

The reference numeral 10 designates as a whole the cylinder or body ofthe whistle, which may be made of any suitable size, form and material,but by preference cylinquick 17 is 'formed isleftfor drical in shape asshown, and of sheet metal. The body or cylinder 10 is hereinshownasbeing made of two pieces 11 andY 12 which Y are mainly semi-circular^ incross section as will be clearly understood by reference to Figl3 of thedrawings. One of said -sections, say the section 11, is provided ateach" of' itsv edges with 'an I outwardly located angular guide 13'whilethe other section 12 is provided -at each of its edges with an y angularguide 14 which latter guides embracethe guides 13 and can be soldered'orotherwise tightly vsecured thereto. As isv clearly shown in Figs. 1, 2Qandv3 of thel drawings, one of the guides 13 is provided onfits walladjacent to thel portion 1'1 with a rack-bar 415 whichmay be produced bytransversely' corrugating said f wall: As shown the lower portions ofthesections 11 and 12 constituting the cylinder are cony tracted andform av tubular neck or nozzlel 16, the lower nend of which is closed..Above its closed end the'nozzle or neck 16 is provided with an outwardlyaredopening 17 and locatedin thenozzle ori-neck 16 is a block 18 whichis inclined-Mourits uppersurface toward the opening 17 asis clearlyshown vin Fig. '2 of thef drawing, in which view it will be'observedthat a-narrow spacev or' opening 19 between the block '18 and the wallof the nozzle 16 in which the opening provided for the pas'- sage of airfrom the cylinder` when the whistling noise is produced. The upper endof the cylinder 10 is internally screw threaded as at 20 to receive ascrew threaded cap 21 which has in its central portion a pair ofopenings 22 which are separated by a bar 23, see Fig. 1 of the drawing.

Referring again to of the sections 11 and 12 of the cylinder, it willybe understood that the wall 24 of the guide 14 opposite the wall of theguide 13 which is provided with the rack-bar 15 or corrugations islocated in parallelism with said rack-bar at a distance therefrom, inorder that said walls will form a longitudinal guideway on one side ofthe cylinder for a pinion 25 mounted on one end of the shaft 26 of therotary fan. The corresponding wall 24 of the guide 14 on the oppositeside of the section 12 and the wall 15a of the guide 13 on the oppositeside of the section 11 form a guideway for a roller 27 which is mountedon the opposite end of the shaft 26 from that on which the pinion 25 ismounted. The shaft 26 is horizontally journaled in the downwardlyprojected prongs 28 of a yoke 29 which has an opening in its middleportion, in which is swiveled the lower end of the operating rod 30which rod is tubular in shape and divided longitudinally thus furnishingtwo prongs 31 which are eX- tended through the openings 22 in the cap 21or cover for the cylinder. Located in the operating rod 30 is a spiralspring 32 which rests at its lower end against the bar 23 and at itsupper end against a knob or button which is detachably secured to theupper end of the operating roc. At diametrically opposite points the cap21 is provided with finger pieces 34 by means of which the body of thewhistle may be held between the first and second fingers of the handwhile the button or knob 33 on the operating rod will rest against thepalm of the hand. The fan shaft 26 is provided with a number of wings orvanes 35 which radiate therefrom and are of sufficient dimensions to fitclosely to thc walls of the body of the whistle yet so as to rotatetherein without undue friction.

From the foregoing and by reference to the drawing it will be understoodand readily seen, that assuming the parts are in the positions shown inFigs. l and 2 of the drawings and it is desired to produce a loudwhistling sound or blast, all that is necessary is to force the yoke 29carrying the rotary fan downwardly in the body 10 or toward its reducedend by applying pressure to the knob or button 33 on the operating rod.As soon as pressure is removed from said button or knob it is obviousthat the operating rod 30, the yoke 29 and rotary fan will be returnedto their normal posi- Copies of this patent may be tions by the actionof the spring 32 against said knob or button.,

Having thus fully described the inven-A tion, what I claim as new anddesire to secure by Letters Patent is l. In a device of the characterdescribed, the combination with a hollow body having a nozzle at oneofits ends provided with an opening, of a block located in said nozzle andpartially closing the same between said opening and said body, a rotaryshaft transversely mounted in the body for movement longitudinally withrespect to the saine, radial lvanes on said shaft, and means toreciprocate the shaft.

2. In a device of the character described, the combination with a hollowcylindrical body having one of its ends tapered and provided with anopening in its wall, of a block located in said tapered portion andpartially closing the same between said opening and the body, said bodyhaving diametrically disposed longitudinal guideways, a rack on one ofthe walls of one of said ways, a yoke located between the guideways, ashaft journaled on the yoke and eX- tended into the guideways, a pinion0n the shaft to engage the said rack, radial vanes on the shaft, anaperturcd cap on the larger end of the body, a rod extended from theyoke through said cap, a knob on the free end of said rod and a springinterposed between said knob and cap to actuate the yoke in onedirection. Y

CHAs. C. TILLMAN, CECILIA CASEY,

obtained for ve cents each, by addressing the "Commissioner of Patents,

Washington, D. C.

